More info please, what

The purpose of the logo is to convey integrity, quality seriousness, and that the company is established.

I'm just after some suggestions of really nice serif faces that I could use. I have a few in mind but I may have overlooked certain faces, or there may be some I'm not aware of.

I'm a big fan of Monotype Ehrhardt. Strong, confident, lots of character:

http://www.fonts.com/findfonts/detail.asp?pid=202380

And check out the Dutch Type Library:

http://www.dutchtypelibrary.com/

Eldorado comes to mind for some reason. It just has that well-dressed business look. Or perhaps it would work better on a designer suit label...

http://www.fontbureau.com/fonts/font_frames.tpl?cart=10875742215401785&fontname=Eldorado